Areview of the cladogram shows a common ancestor for these four types of vertebrates. which statement best explains the genetics represented by the cladogram? a) there are no genetic similarities among the four distinct types. b) the four types of animals no longer have any genetic similarities. c) lizards and snakes are more genetically alike than lizards and birds. d) a common ancestor indicates that the four once had identical genotypes

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.